The below are the tyre sizes to suit 20″ Rim [Sorted by tyre width]

155/60R20    
175/55R20    
195/50R20      195/55R20  
215/30R20      215/45R20  
225/30R20      225/35R20      225/40R20
225/50R20    
235/30R20      235/35R20      235/40R20
235/45R20      235/50R20      235/55R20
245/30R20      245/35R20      245/40R20
245/45R20      245/50R20  
255/30R20      255/35R20      255/40R20
255/45R20      255/50R20      255/55R20
265/30R20      265/35R20      265/40R20
265/45R20      265/50R20      265/60R20
275/25R20      275/30R20      275/35R20
275/40R20      275/45R20      275/50R20
275/55R20      275/60R20      275/65R20
285/25R20      285/30R20      285/35R20
285/40R20      285/45R20      285/50R20
285/55R20      285/60R20      285/65R20
295/25R20      295/30R20      295/35R20
295/40R20      295/45R20      295/55R20
295/60R20      295/65R20  
305/25R20      305/30R20      305/35R20
305/40R20      305/45R20      305/50R20
305/55R20    
315/30R20      315/35R20      315/40R20
325/25R20      325/30R20      325/35R20
325/60R20    
33/11.5R20      33/12.5R20  
335/25R20      335/30R20  
345/25R20      345/30R20  
35/11.5R20      35/12.5R20      35/13.5R20
37/12.5R20      37/13.5R20